February 2021 Nsc

FEBRUARY 2021 NSC

Steel takes Riverside Stand New school for Canterbury Dublin icon refurbished Steel landmark for Kensington

NEW STEEL CONSTRUCTION Volume 29 No 2 www.newsteelconstruction.com

FEBUARY 2021 Vol 29 No 2

Cover Image Riverside Development, Craven Cottage, Fulham FC Main client: Fulham FC Architect: Populous Main contractor: Buckingham Group Structural engineer: WSP Steelwork contractor: Severfield Steel tonnage: 2,600t including all secondary steelwork and temporary fittings

EDITOR Nick Barrett Tel: 01323 422483 EDITOR’S COMMENT [email protected] 5 The latest annual Market Share Survey shows that steel maintained or improved its share in key DEPUTY EDITOR Martin Cooper Tel: 01892 538191 sectors in 2020, and captured an all-time high of almost 74% in the offices market. Editor Nick [email protected] Barrett says the sector is well positioned for the predicted market recovery in 2021. PRODUCTION EDITOR Andrew Pilcher Tel: 01892 553147 [email protected] NEWS PRODUCTION ASSISTANT Alastair Lloyd Tel: 01892 553145 6 Structural steelwork gains market share and SCCS gets UKAS accreditation to offer UKCA [email protected] certification. COMMERCIAL MANAGER Fawad Minhas Tel: 01892 553149 [email protected] EDUCATION NSC IS PRODUCED BY BARRETT BYRD ASSOCIATES ON 10 A new school in Canterbury has reaped the benefits of steel construction’s ability to offer a much BEHALF OF THE BRITISH CONSTRUCTIONAL STEELWORK ASSOCIATION AND STEEL FOR LIFE IN ASSOCIATION WITH quicker programme compared to other framing solutions. THE STEEL CONSTRUCTION INSTITUTE The British Constructional Steelwork Association Ltd MIXED-USE 4 Whitehall Court, Westminster, London SW1A 2ES Telephone 020 7839 8566 12 New steel elements are being added to the existing former Clerys department store in Dublin to Website www.steelconstruction.org Email [email protected] create a new landmark mixed-use development.

Steel for Life Ltd 4 Whitehall Court, Westminster, London SW1A 2ES MIXED-USE Telephone 020 7839 8566 Website www.steelforlife.org 16 A high-quality commercial and retail scheme is being formed on a site once occupied by Email [email protected] Pontings Department store on London’s Kensington High Street. The Steel Construction Institute Silwood Park, Ascot, Berkshire SL5 7QN Telephone 01344 636525 Fax 01344 636570 SPORT Website www.steel-sci.com Email [email protected] 18 The challenging construction of Fulham FC’s new stand has involved large roof trusses being CONTRACT PUBLISHER & ADVERTISING SALES assembled in Tilbury and floated upriver by barge. Barrett, Byrd Associates 7 Linden Close, Tunbridge Wells, Kent TN4 8HH TRANSPORT Telephone 01892 524455 Website www.barrett-byrd.com 22 London Southend Airport’s expansion plans include a new steel-framed extension to the EDITORIAL ADVISORY BOARD terminal building’s baggage area. Dr D Moore (Chair) Mr N Barrett; Mr G Couchman, SCI; Mr C Dolling, BCSA; Ms S Gentle, SCI; TECHNICAL Ms N Ghelani, Mott MacDonald; Mr R Gordon; Ms K Harrison, Whitby Wood; 24 SCI’s Dr Francisco Meza explains the new guidance on fire resistance of galvanized steel Mr G H Taylor, Caunton Engineering; Mr A Palmer, Buro Happold; sections. Mr O Tyler, WilkinsonEyre Mr J Sanderson, Cairnhill Structures ADVISORY DESK The role of the Editorial Advisory Board is to advise on the overall style and content of the magazine. 28 AD 458 – Web panel shear resistance. New Steel Construction welcomes contributions on any suitable topics relating to steel construction. Publication is at the discretion of the Editor. Views CODES AND STANDARDS expressed in this publication are not necessarily those of the BCSA, SCI, or the Contract Publisher. Although care has been taken to ensure that all 50 YEARS AGO information contained herein is accurate with relation to either matters of fact or accepted 30 Our look back through the pages of Building with Steel features a Grade II* listed house in practice at the time of publication, the BCSA, SCI and the Editor assume no responsibility for any Horsmonden, Kent. errors or misinterpretations of such information or any loss or damage arising from or related to its use. No part of this publication may be reproduced in any BCSA MEMBERS form without the permission of the publishers. 32 All rights reserved © 2021. ISSN 0968-0098

These and other steelwork articles can be REGISTER OF QUALIFIED STEELWORK CONTRACTORS FOR BRIDGEWORKS downloaded from the New Steel Construction Website at www.newsteelconstruction.com 34

NSC February 2021 3 41843_SSDA entry ad_AW 20/6/07 12:43 pm Page 1

celebrating exce ence in Call for entries for the 2021 steel Structural Steel Design Awards

The British Constructional Steelwork AssociationCall and for Trimble entries Solutions (UK) for Ltd havethe pleasure 2008 in inviting entries for the 2021 Structural Steel DesignStructural Awards. Steel Design Awards Now in their 53rd year, the Awards celebrate the excellence of the United Kingdom and the Republic of Corus and The British Constructional Steelwork Association have Ireland in the field of steel construction, particularly demonstrating its potential in terms of sustainability, pleasure in inviting entries for the 2008 Structural Steel Design Awards. cost-effectiveness, aesthetics and innovation. The Awards are open to steel-based structures situated in the UK or overseas that have been built by TheUK Aorwar Irishds celebrate steelwork the contractors. excellence of the United Kingdom in the field of steel construction. Particularly demonstrating its potential in terms Why enter? of efHowficiency to, cost succeed? effectiveness, aesthetics and innovation.

If your project is shortlisted, your The PlanAwards ahead are open and to involve steel based the wholestructures project situated team in the from United the company would have the kudos of being Kingdomoutset or overseasin preparing that havea high-quality been built by submission, UK steelwork don’t contractors leave part of a prestigious Awards scheme usingit steelto the predominantly last minute. sourced Read thefrom entry Corus. criteria They must and have particularly been - one with a long history, focussed completedthe ‘Submission and be ready Material’ for occupation section or use on duringthe entry the calendar form and solely on steel construction and the yearsprovide 2006-2007; exactly previous what entries is required, are not eligible. nothing more, nothing only one where expert judges visit every less. In addition: To find out more and request an entry form visit: shortlisted project to truly appreciate its • High quality photos will portray your project at its best. qualities. In addition, you’ll receive: www.steelconstruction.org• A well written, flowing description of the context, concept • Free publicity for you, your project or calldesign, Gillian outstanding Mitchell featuresof BCSA and on key 0207 construction 747 8121 details and your client, both online and in the will allow the judges to swiftly appreciate the essence of construction press. your project. • Free attendance at a major Awards • Broad representation from all parties at the judges’ visit event in central London for your will demonstrate collaboration and enthusiasm. project team. • Recognition of excellence for your project, be it large or small. To find out more and download an entry form visit https://www.steelconstruction.info/Structural_steel_design_awards or call Chris Dolling (BCSA) on 020 7747 8133 Closing date for entries: Friday 26th February 2021 COMMENT Steel seizes record offices market share

onfidence and stability are the two key ingredients that underpin business investment on the scale that a modern industrial economy needs to keep ticking over. Last year will go down in history as Ca year when business confidence in the western world took more hits than at any time since World War II, and stability was threatened on a number of fronts including Brexit, the pandemic, and increasing talk of the danger of the UK itself breaking up. It took brave senior managers and investors to commit to anything that they didn’t have to, and construction suffered sorely from a multitude of decisions to kick projects into the long grass until the picture becomes clearer. Not many substantial projects were cancelled outright, but the knock on, or Nick Barrett - Editor multiplier, effects of one project postponed causes more uncertainty elsewhere along supply chains. Against that background it was little surprise then that most sectors of construction suffered falls in demand of over 20% in 2020, as confirmed in the 2020 Market Share Survey from Construction Markets (see News). Hopes are now high however, as we said last month, that with the COVID-19 vaccination programme off to an encouraging start and Brexit - for better or worse - behind us, 2021 will see an equally sharp rise in sentiment and therefore demand. The Market Share Survey, produced by independent researchers since 1980, shows that steel fared relatively well against the weakened background in last year. The key sheds market for example fell by almost 24%, but steel increased its market share slightly, which bodes well for the future in a market segment that is expected to perform well in 2021. Multi-storey buildings also fell by some 22%, and again steel showed a small rise in market share, to almost 65%. In multi-storey offices steel in fact reached an all-time high share of the market of almost 74%, compared to 72.5% a year earlier and 73% in the previous record year of 2006. Further gains were made in the health, retail, and leisure sectors. In residential, steel just about held its own in the high-rise market and managed to increase market share by over 3% in the low-rise sector. This year government spending plans will focus attention on key sectors like education and healthcare that steel has excellent credentials in. Private sector investment in the burgeoning logistics sector relies on steel to provide the sheds it depends on, and once worries about the future of the office are overcome, the commercial market, where steel dominates the multi-storey sector, is widely expected to enjoy a resurgence in demand. The focus on delivering value for money along with solutions that incorporate high sustainability performance will be undiminished as the recovery picks up, and will surely strengthen over time, which augers well for steel. The way that the constructional steelwork sector has developed, with almost all work being carried out offsite in line with the Modern Methods of Construction agenda, CNC production easily adapting to BIM, and close collaboration with the rest of the supply chain, means steel construction is in good shape to support its markets as the 2021 post-pandemic recovery gathers pace.

Headline sponsors:

BARRETT STEEL LIMITED

Gold sponsors: Ficep UK Ltd | National Tube Stockholders and Cleveland Steel & Tubes | voestalpine Metsec plc | Wedge Group Galvanizing Ltd

Silver sponsors: Jack Tighe Ltd | Kaltenbach Limited | Peddinghaus Corporation

For further information about steel construction and Steel for Life please visit www.steelconstruction.info or www.steelforlife.org

Steel for Life is a wholly owned subsidiary of BCSA

NSC February 2021 5 NEWS Steel performs well in constrained market

Structural steelwork increased its market sector is expected to perform well in 80%

share in key sectors during 2020, despite 2021, due to the knock-on effect of the 70% most areas of the construction industry pandemic lockdown, which has seen the severely contracting due to the COVID-19 demand for distribution centres increase, 60% pandemic. partly because of the rise in online 50% According to the Market Share Survey, shopping. which has been produced by independent The multi-storey market was down 40% researchers Construction Markets since 22.6% from 2019, but steelwork’s overall 30%

1980, demand in most construction share increased from 64.3% to 64.7% in % Based on Floor Area sectors fell by over 20% last year, but 2020. 20% steelwork fared well in this weakened Steelwork managed to increase its 10% market. share in most multi-storey sub-sectors, The key sheds market was down 23.7%, with a 1.4% market share rise in offices, 0%

compared to 2019, with a total floor area to an all-time high of almost 74% in 2020. 1980 1981 1982 1983 1984 1985 1986 1987 1988 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 Steel Insitu Concrete Precast Concrete Load Bearing Masonry Timber of 9,113,000m2. However, steelwork’s In the retail sector its share was up by market share rose from 92.2% in 2019 to 5.5%, in leisure up by 3.6% and in health Market Shares, multi-storey office buildings market, 1980 to 2020 92.4% in 2020. up by 0.5%. 2020, but steelwork’s share for low-rise to the previous year to 12.5%, which According to many developers, this The residential market fell by 24.7% in apartments increased by 3.1% compared equated to a floor area of 265,000m2.

Britain (comprising England, Scotland from January 2021,” said SCCS Director of SCCS now UKAS accredited to and Wales). The equivalent system in Certification Stephen Blackman. Northern Ireland is CE + UKNI marking. The SCCS is a wholly-owned offer UKCA certification The Steel Construction Certification subsidiary of the British Constructional Scheme (SCCS) has been automatically Steelwork Association. It was established transferred from an EU Notified Body to in the early 1980s to provide quality a UK Approved Body and is now UKAS management certification for steelwork accredited to offer both UKCA and CE + contracting organisations. UKNI certification in accordance with SCCS now offers a wide range of the Construction Products Regulation certification and monitoring services 2011 (retained EU law EUR 305/2011) as for the structural steelwork sector, amended by the Construction Products including integrated or separate UKAS (Amendment etc.) (EU Exit) Regulations accredited Quality management systems, 2019 and the Construction Products Environmental and Health & Safety (Amendment etc.) (EU Exit) Regulations management systems, Factory Production CE marking is now familiar to most However, now that the United Kingdom 2020. Control systems and selected National construction professionals and continues has left the EU a new system of UK “This extension of SCCS’s offering Highways Sector Schemes. for products placed on the EU market, Conformity Assessed marking (UKCA ensures its clients are prepared and have For more information about SCCS go to which includes the Republic of Ireland. marking) has been introduced for Great the appropriate certification required www.steelcertification.co.uk Steel creating Leicester’s Hotel Brooklyn

Approximately 750t of structural steelwork is being used to construct an hotel, which on completion will be linked to the adjacent Leicester Tigers Rugby Union Club’s stadium. The £22M project, which is being developed by Marshall CDP, with its construction arm – Marshall Construction – acting as main contractor, is located on a 1.7-acre plot previously occupied by the Granby Halls live music and retail units. 28m-long curved pedestrian bridge. ground floor car park much of the area and entertainment complex. The first floor of the hotel will also The hotel structure is wedge-shaped, between the two wings is taken up by a Known as the Hotel Brooklyn, the boast 3,300m2 of reception, lounge which aligns with the shape of the plot. large, covered atrium. five-storey building will have 191 and dining areas, as well as a business From the tip of the V-shape, two wings The hotel is due to complete during guest rooms located on the upper centre and lobby areas. The first floor of the structure splay outwards, creating the summer of 2022, and Caunton four floors, while the ground level is will be directly connected to the rugby the widest part of the hotel directly Engineering is the project’s steelwork predominantly taken up by a car park ground’s Holland & Barrett stand via a opposite the rugby ground. Above the contractor.

6 February 2021 NSC NEWS Free guide to UKCA marking NEWS IN BRIEF Scotland-based steelwork contractor post-Brexit now available AJ Engineering & Construction Services is expanding its premises A new free guide that highlights how UK’s exit from the European Union and in a £2.5M investment over the next the steel construction sector can easily the ending of the transition period on 31 three years, which it said will allow meet the requirements of UKCA marking, December 2020. it to more than double its production as well as detailing the straightforward All construction professionals, main capabilities and employ more staff. process for continuing to comply with contractors, and clients need to be aware explains in detail The development will see its existing the Construction Products Regulation, of the changes to what was the system what UKCA marking is, how it will work buildings in Forres being refurbished which is the legal basis for both UKCA for CE marking of construction products for the steel construction sector, and and a new automated fabrication and CE marking, has been published by that had been in force since 2014. how you can ensure that you and your the British Constructional Steelwork CE marking continues for products supply chain are compliant with the new facility being installed. Association (BCSA) and Steel for Life. placed on the EU market, which includes legislation. It also covers the slightly Entitled Steel Construction the Republic of Ireland. However, for different arrangements that apply in The University of Reading has UKCA Marking, the publication is products placed on the market in Great Northern Ireland. entered into an agreement with available for free download at the Britain (GB), comprising England, “The steel construction sector affiliates of Commonwealth Real steel construction sector website: Scotland and Wales, a new system of successfully introduced CE marking six Estate LP, a film studios investor www.steelconstruction.info UKCA marking has been introduced, years ago, and we are confident that the based in Los Angeles, for a long Major changes have been made to although CE marking will continue to be sector will manage the change to UKCA lease of land at the University’s the system of conformity assessment recognised in GB until the end of 2021. marking just as effectively,” said BCSA Thames Valley Science Park campus, for construction products following the The free downloadable guide CEO David Moore. Berkshire, which will see the development of a major film studios Bridge installed for Port of Sheerness upgrade and creative media campus. Forming part of Peel Ports’ master plan Recycling management firmBinn for its Port of Sheerness, a project which Group has announced that it has includes a 20-year strategy for growth, obtained planning consent from Nusteel Structures has fabricated and Perth & Kinross Council’s Planning supplied a new vehicular bridge. and Development Committee for The bridge connects the port with a new energy-from-waste facility. the former Thamesteel site, which is The proposed facility will be located being transformed into flexible storage within the Binn Ecopark and is and purpose-built logistics facilities, The beams were transported to site terminal for bulk timbers, automotive intended to process 84,900 tonnes including 23-acres of car storage for the by Nusteel’s own transport department and other sectors. port’s automotive clients. using extendable trailers. Once on-site, Peel Ports’ master plan at Sheerness of residual wastes per annum. It will Working on behalf of main contractor the four beams were assembled into will create up to 1,000 jobs, in addition to operate using mass burn rolling grate John Sisk & Son, Nusteel Structures braced pairs before being lifted into the 1,640 jobs the port already supports. incinerator technology. fabricated four beams for the bridge. position by a 1,000t-capacity crane. Once completed, Peel Ports expects to Each beam was 40m-long x 3.6m-deep The ongoing work will strengthen the have invested an estimated £50M in the A planning application has been and weighed 38t. north Kent port’s position as a leading region. submitted by Muse Developments and South Tyneside Council, to bring forward one of the first near net-zero Bourne Parking reaches a century of car parks buildings in the north-east region. The proposals are for a 4,600m2 Bourne Parking (part of the Bourne The Commons multi-storey car park Working as main contractor, riverside five-storey office block Group) is currently constructing its 100th in Hatfield town centre is a four-level undertaking all design aspects including car park since the turn of the century. structure containing 420 spaces. steelwork design and erection on behalf at The Glassworks development in of Welwyn Hatfield Borough Council, South Shields. Bourne Parking required 400t of steel for the project. The University of Plymouth has Bourne Parking Managing Director been granted permission to create Karl Butters said: “This is our landmark an iconic new facility that will inspire 100th car park constructed this century and educate the next generation and it still amazes me and makes me feel of engineers and designers. The immensely proud when I see the speed of Babbage building, on the western erection of our bespoke steel and precast edge of the University’s main campus, system build. will be enlarged and enhanced “The frame and floor erection commenced on 7 September 2020 and to provide an innovative and was completed on 5 November 2020. sustainable new home for the School That’s 420 spaces constructed in under of Engineering, Computing and two months!! A fantastic achievement on Mathematics and additional space a very tight site surrounded by live vehicle for the School of Art, Design and and pedestrian routes.” Architecture.

NSC February 2021 7 NEWS PRESIDENT’S COLUMN New Steel Construction

It’s public news that steel section prices have increased Technical Digest now dramatically over the last six months, mainly on the back of commodity prices available online rising for both BOS and EAF New Steel Construction’s (NSC) fifth Technical for all involved manufacturing routes, and Digest, which brings together a year’s worth of in the design of increased demand in China. technical guidance, is now available for download at: constructional steelwork. Many mills have been trading www.steelconstruction.info The longer Technical Articles cover more in the red. Clearly, prices needed to rise, but the scale of the Helping to keep engineers and architects up- detailed insights into what designers need to know, increases has been alarming and unfortunately every time to-date with the latest steel construction related often the result of legislative changes or changes to steel prices go up it’s front-page news. However, when other guidance, NSC’s Digest compiles all the magazine’s codes and standards. materials increase their prices by similar levels, it always Technical Articles and Advisory Desk Notes from Sometimes it is simply felt that it would be helpful seems to go under the radar. It’s also worth remembering 2020, which can be downloaded as a pdf or viewed if a lot of relatively minor changes, perhaps made that there is a lot of steel in a concrete frame and rebar prices online. over a period of time, were brought together in one have rocketed too. Advisory Desk Notes reflect recent developments place, so a technical update is needed. Although the raw material makes up a relatively small in technical standards or new knowledge that Some of the topics covered in last year’s Technical proportion of a steel-framed multi-storey building’s designers need to be made aware of. Some of Articles include in-plane stability and restraints overall cost, less than 5%, I’m sure a lot of cost plans them arise because a question is being frequently for portal frames, shelf angle floor beams in fire, are being revised as we speak. This could result in more asked of the steel sector’s technical advisers. They joint stiffness calculation and the design of splice delays of buildings being released for construction, further have always been recognised as essential reading connections. exacerbating the reduction in overall work, which we’ve been experiencing since Brexit and COVID-19 loomed large. The BCSA lobbied very hard for extensions to furlough for this Science block rises period six months ago with BEIS, and many of us are using this facility. Economists are predicting inflation will increase over the next two years, possibly up to 4%, and that will with steel cause further problems to the cost of buildings. It’s important Working on behalf of Morgan Sindall, Elland Steel that unnecessary waste incurred in the process of building in Structures is erecting 1,100t of structural steelwork the UK is reduced to offset some of these increases that are for The University of Salford’s Science, Engineering inevitable. and Environmental Building (SEE). Over the last year there has been a tremendous growth The four-storey, 15,550m2 SEE Building will in interest in ‘carbon’, with clients demanding comparison be occupied by the University’s departments of checks of the carbon footprint of a building made from Robotics, Built Environment, Civil, Aeronautical at the entrance where feature CHS columns are differing materials. Steel has done well in the comparisons, and Mechanical Engineering, Computer Science utilised. but not as well it should. Unfortunately, when people have and Networking, Human and Natural Science and According to Morgan Sindall Senior Project started to do comparisons they have concentrated on the The Morson Maker Space (an additive and digital Manager Justin Kay, the project was not always ‘cradle to grave’ embodied carbon of the building, which manufacturing hub). going to be built using this framing solution. does not take account of the recovery, re-use and more The new structure is a braced frame, using a “It was originally going to be a concrete-framed importantly the recycling of materials at end of life. The composite solution of steel beams supporting metal building, but in order to deliver the job within budget British Standards refer to this neglected part of the equation decking and a concrete topping to form the floors. we had to undertake a value engineering exercise, as ‘Module D’. If the construction industry was taking into Typically, columns are hot rolled UC sections, except whereby the design was changed to steel.” account Module D, in combination with the embodied carbon of manufacture, Modules A1-A3, the embodied carbon factor for BOS steelwork would be reduced in the order of 65%. Other materials do not have as good a message for end Plans revealed of life recovery, re-use and recycling, so ignoring Module D makes the whole process of embodied carbon comparison for flagship of building materials flawed and grossly unfair to BOS manufacture. EAF manufacture benefits from steel recycling, Middlesbrough but these figures are not expressed in their Module D value as they are already included in their embodied carbon office scheme environmental change across the Tees Valley and the factors for Modules A1-A3. The BCSA is lobbying hard for wider region. construction professionals to take Module D into account Chinese contractor and developer BCEGI has Lead Director of BCEGI Dongwen Yu said: “We are in such embodied carbon comparisons. The recycling and submitted a planning application for an office scheme delighted to be working alongside Middlesbrough re-use of material is one of the cornerstones of sustainable in Middlesbrough. Council to deliver this iconic digital hub. thinking and the circular economy. Our industry has been Known as Boho X, the seven-storey structure will “Our vision is to deliver a thriving, successful recycling steel successfully for many years and the scale of offer 5,500m2 of Grade A office space, primarily for and attractive heart to Middlesbrough, which will it is astonishing, in the order of 95% to 99%. Simply put, not the digital and creative sector. It will also include a serve the needs of local people and businesses for taking into account recycling and re-use in embodied carbon swimming pool and gym, café, lecture theatre and a decades to come. This is an ambitious and carefully comparisons is like not taking gravity into account when rooftop bar/event space. crafted proposal that expresses the confidence in designing an aeroplane! According to BCEGI, the building’s state-of-the- Middlesbrough.” Mark Denham art spacious, modern working environments will Work is due to start in August, with a completion BCSA President act as a further catalyst for social, economic and date in December 2022.

8 February 2021 NSC NEWS Developer constructing 90,000m2 of logistics and distribution space as demand soars

currently underway in the UK. G-Park Milton Keynes and a further unit The company said the development at GLP’s flagship logistics park Magna programme has been launched to satisfy Park Milton Keynes. the significant demand in an increasingly Bruce Topley, Managing Director, GLP supply-constrained logistics real estate UK, said: “The growth of e-commerce market in the UK. in the UK has been accelerated by the Demand for larger warehouses COVID-19 pandemic given the increased has significantly expanded in recent importance of home deliveries. years, particularly among e-commerce “As a result, we have seen a surge occupiers in need of more storage space. in demand for logistics real estate According to Savills, online sales in in the right locations. Customers are December 2020 were 51% higher year- also seeking to reinforce their supply on-year, with this growth trajectory chains and increasingly require higher GLP has announced that it has begun Northamptonshire and Milton Keynes. expected to continue. specification buildings and cutting-edge developing more than 90,000m2 The developments are said to be part The developments consist of three sustainability credentials. In response to of logistics and distribution space of the largest programme of speculative units at G-Park Bedford Wixams, a unit this, we are excited to be bringing high- across four sites in Bedfordshire, logistics real estate development at G-Park Northampton, two units at quality logistics space to the market.” Redevelopment of Granada TV studios underway Once the home of Granada Television for a 10-storey commercial block on the and lower ground floor. (later ITV Granada), Manchester’s famous site of the former annex building, which Creating the desired column-free and TV studios are being redeveloped into a used to accommodate dressing rooms flexible office spaces, a series of Westok new mixed-use scheme and steelwork and the make-up department. cellular beams span between the building’s is nearing completion on one of the first The steel-framed structure measures perimeter columns, forming each of the new offices blocks. 50m-long x 11m-wide, and it will floors without any internal support. Working on behalf of Bowmer + accommodate around 6,000m2 of office The office block is due to complete in Kirkland, EvadX is erecting 550t of steel space, along with retail units at ground October.

During a Christmas period rail place using a rail-mounted crane. possession a 33m-long signal gantry The signal gantry will be put into structure, fabricated by Adey Steel, was service this summer along with further installed at Bristol East Junction. remodelling works to the area. The plan The steel gantry forms part of the to transform the junction will improve ongoing remodelling works at Bristol capacity, flexibility and reliability, Temple Meads. The structure was making more efficient use of platforms fabricated at Adey Steel’s Loughborough at the station, while reducing delays for production facility, before being painted passengers. Steel signal gantry and part-assembled prior to installation. An extra line is also being introduced Working with AMCO Giffen and to support additional suburban services installed at Bristol Network Rail, the gantry was lifted into being planned for the future.

Diary For SCI events contact Jane Burrell, tel: 01344 636500 email: [email protected] web: https://portal.steel-sci.com/trainingcalendar.html

Tue 2 & 9 February 2021 combinations are appropriate, in which This webinar gives an introduction to the use STROBE circumstances. of stainless steel in structural applications. Online course Tue 23, Thu 25 February and Tue 2 March 2021 Topics covered include grade selection and The third and fourth webinars in a series of Light Gauge Steel Design design of members and connections in four that will inform engineers how to design Online course accordance with Eurocode 3. high strength steels (HSS) in accordance with This online course is delivered in 3 sessions Wed 24, Thu 25, Wed 31 March and Thu 1 April the current European practice as well as cover and introduces the uses and applications of 2021 brand new developments in design guidance light gauge steel in construction, before Portal Frame Design arising from the STROBE project. explaining in detail the methods employed by Online course Tue 16 February 2021 Eurocode 3 for designing light gauge steel The course aims to provide in-depth coverage Eurocode Load Combinations members in bending and compression and the of the major issues surrounding the analysis, Member webinar calculation of section properties. design and (crucially) the detailing of portal Eurocode load combinations can cause some Wed 3 March 2021 frames. The course covers frame design to confusion amongst building designers. This Designing in Stainless Steel BS EN 1993-1-1. webinar has been prepared to explain which Member webinar

NSC February 2021 9 EDUCATION

Steelwork provided Steel passes school exams the necessary speed of construction.

sometimes occurs with concrete elements.” Structural steelwork has proven to be the right choice for the The new school will feature 7,200m² of teaching space, with both traditional teaching spaces and construction of a new school in the cathedral city of Canterbury. modern vocational training studios in a steel-framed three-storey building. Vocational subjects to be taught will include catering, resistant materials, hair partnership between Kent County and beauty therapy, performing arts, information FACT FILE Council, the Department for Education and communications technology, business and Barton Manor School, Canterbury and Barton Court Academy Trust is health and social care. Main client: Kent County Council Architect: Noviun Architects constructing a new school in Canterbury. Adjacent to the teaching block, the school will ABeing built on the site of the former Chaucer also have a steel-framed sports hall, that will also Main contractor: Kier Structural engineer: Malachy Walsh Technology School, Barton Manor School is due to include a two-storey element that will accommodate and Partners open in September 2022, and will provide teaching a first-floor dance studio as well as changing rooms Steelwork contractor: H Young Structures space for 1,050 pupils aged between 11 and 18. on the ground floor. Steel tonnage: 600t In order to meet the scheduled school opening Work on this project began in November 2019, date, it was important to choose construction with the demolition of the previous school buildings materials that could form the architectural design and then a thorough site remediation programme, Strategically placed economically and swiftly. which was required as asbestos was found in the bracing provides the “Speed of construction is always important and ground. stability. building with a steel-framed solution is quicker than A major sewer previously ran beneath the site and other methods, especially during the inclement under the proposed footprint of the main school winter months,” says Kier Project Manager Jamie building. During the remediation programme, the Hawkins. sewer was diverted to run around the perimeter of “We also have some 18.5m-long spans in the the site. sports hall, and these would have been difficult to Kier then installed pad foundations and ground form in anything other than steel.” beams in readiness for the steelwork erection Malachy Walsh and Partners’ Associate Director programme to begin. However, to give the steel Tim Moynihan agrees and adds: “Steel provides a helping hand and make it easier to achieve the security of quality and speed, unlike concrete required fast construction programme, the ground there is little or no risk of a member not reaching floor slab for the teaching block was also installed the required quality and having to be recast as during the groundworks phase.

10 February 2021 NSC EDUCATION “Speed of construction is always important and building with a steel- framed solution is quicker than other methods, especially during the inclement winter months.”

“This gave the steel erectors a flat, clean and dry surface to run their MEWPs along during their B programme, which helped to ensure they completed C the work on schedule,” adds Mr Hawkins. The main school building is a sort of Z-shaped A structure with a full-height atrium, containing the dining room and a sixth form social area, at its centre. Next to the dining area there is an activities hall, C Three sections of the main which is a double height space and represents the school building’s steel frame only part of the main school building that is two- and a view of the school’s Z-shaped footprint. storeys high. Forming this area’s column-free space, is a series of 12m-long UB roof rafters. The classrooms generally radiate outwards, on all three floors, from the main atrium and tend to have regular widths, although some are longer than others. As the plan shape of the school is not very regular, some of the steel connections are not at 90 degrees to each other. “This is where our BIM project collaboration was useful, as it allowed these details to be inspected closely,” explains Mr Moynihan. Adding architectural interest to the lower parts of the main school building, some columns are circular hollow sections that will remain exposed in the completed scheme. On the upper floor, these members will not be on view and consequently they change to standard UC sections. Within the building there are several stair cores and a lift core. The stair cores are steel-framed with Visualisation of the precast stairs, while the lift core also has a steel completed school. frame for construction continuity. It has block infill walls to facilitate the installation of fixings for the The installation of the precast flooring planks lift equipment. required a lot of coordination between steelwork The cores, however, do not provide the contractor H Young Structures and the project’s structure with its stability, this is predominantly precast concrete installer. provided by bracing, which was required during The steelwork was generally erected to the full the construction phase as well as in the completed height of the structure, with the roof elements left form. off to allow the planks to be lifted into place. Once The cross bracings are located within the the flooring was installed, H Young Structures’ classroom partition walls, while roof bracing is team followed on behind to complete the steel placed within the ceiling voids. However, due to frame. the high number of windows, bracing has not been Summing up, Ms Cardus, Executive Headteacher viable in many locations and so some moment of Barton Court Academy Trust says: “The resisting continuous frames have been installed. school is a truly exciting project for Barton Court The main school building and the two-storey Academy Trust and the local community. It has part of the sports hall have both used a precast been an amazing opportunity to design a school flooring solution supported by steel beams. from inception which can deliver our vision for “The precast floors work well with steel in terms excellence, collaborative learning and creativity. of quality control and speed. Metal decking with “The Trust has named the new school Barton concrete was considered, but tends to be too thin Manor School and it will provide Canterbury and The project’s first steel for the multitude of uses we required,” says Mr the local area with much needed secondary school elements are lifted into Moynihan. places.” T place.

NSC February 2021 11 MIXED-USE

Steel serves up store refurbishment

A famous department store in Dublin is being refurbished with structural steelwork to form the centrepiece of a new mixed- use development.

The completed Clerys Scheme New steel-framed floors will create a new landmark are being added to the destination for the north side existing structure. of Dublin’s Liffey River.

riginally opened in 1853, Clerys which occurred in the 1940s and 1970s, such as the department store was for many years a existing atrium infill and roof extension have been Dublin landmark, so much so that the carefully demolished. The hotel and new office block pavement below its grand two-faced are being built on areas previously occupied by two Oclock that hangs above the main O’Connell Street of these 1970’s extensions. entrance became a famous rendezvous point, and ‘Clerys is a unique and iconic building, which not just for shoppers. was one of the world’s first purpose-built retail “We needed a lightweight efficient Unfortunately, the famous store permanently department stores,” says Waterman Moylan method to form the new floors, closed its doors in 2015, and now after laying idle Associate Anthony Byrne. “Much of the work for a few years a major refurbishment is in full revolves around retaining the impressive Portland which would not require us to have swing that will bring the building back to life as the stone facade, while stripping back the partial third to install new foundations in the centrepiece of a new mixed-use development known floor which holds it in position, and then adding as the Clerys Quarter. new atrium infills, façade structures, three new long confined existing basement.” Overall, the scheme comprises three main spanning steel-framed floors to the entire building, elements, the refurbishment and vertical extension and a new long span feature curved roof.” of the historic store, and two new buildings to the In the completed scheme, the retained ground, rear, a 176-bedroom hotel and a new five-storey first and second floors will once again be used for office block. retail, while the new upper steel-framed levels In the main redevelopment of the Clerys Building, will accommodate offices. The new steel-framed as much of the original 1920s (the store was rebuilt structure is supported independently from the after a devastating fire in 1916) building will be original concrete frame on new columns placed retained, although later internal interventions sympathetically within the existing atrium and

12 February 2021 NSC MIXED USE

FACT FILE Clerys Quarter, Dublin Main client: Oakmount Architect: Henry J Lyons Main contractor: Glenbrier Construction Structural engineer: Waterman Moylan Steelwork contractor: Kiernan Structural Steel Steel tonnage: 1,800t

around the building’s perimeter to minimise the to have to install new foundations in the confined a considerable amount of time from both ourselves impact on the new and existing floorplates. existing basement,” explains Mr Byrne. “We and Waterman Moylan to get a solution that was The new steelwork has had to follow the original utilised a particular system of micro-piles and raft both structurally sound and could easily be installed structural grid around the perimeter, which revolved foundations to support the new steel-framed and on site. around a 6m and 7m column spacing. However, concrete structures. These rafts were minimised “The detail transfers the forces from the column internally the new office floors have fewer columns to maintain a formation level above the existing (above) down onto the column (below) all the and Westok cellular beams, up to 14m long, have ground water depth below the existing basement, while allowing the existing concrete beams to pass been used to provide modern flexible office spaces. mitigating the need for dewatering in gravel freely through the column’s cross section.” Kloeckner Metals UK Westok Design Team deposits under the adjacent structures.” The design of these bespoke pieces also had to Manager John Callanan comments: “The As well as maintaining some continuity within take into account how they could be erected within opportunity to help develop the built environment the retained structure, it was important that the the existing concrete frame. of O’Connell Street really is a once in a lifetime new steel columns and frame remained independent To this end, the design team agreed that not only opportunity, and we’re absolutely delighted to and did not connect to or touch the existing frame. would the column be split between the different see the fruits of our design collaboration with This was required to eliminate the possibility of floor levels, but that the web of the column (from Waterman Moylan and Kiernan Structural Steel take differential settlement, or any additional loading of above) would be removed, thereby allowing the shape.” the historic structure. steelwork erectors to slot the column over the The ability to create the column-free spaces To overcome this challenge, the steel columns existing beam. were one of the reasons for choosing a steel-framed are intricately detailed to bridge the existing floor The plates consist of 70mm × 480mm × 2700mm solution with long span beams for the new levels, as beams via a series of bespoke stiffened splice plates sections on both flanges, with two 20mm × 200mm was the material’s lightweight attributes. at each floor level. × 270mm stiffeners (fins) used on both plates in “We needed a lightweight efficient method to Kiernan Structural Steel Engineer Mirivano order to increase the stiffness so they could carry form the new floors, which would not require us Carrig explains: “The design for these elements took the loads without buckling.

NSC February 2021 13 MIXED-USE

Each splice contained around 50 M42 bolts with a further four M36 positioning bolts, which were used in vertically slotted holes to ensure that the (above) column flanges remained vertical during installation - thereby ensuring that the flanges were in contact. Each splice plate (per flange) weighs almost 900kg and like much of the steelwork, they will remain exposed in the completed project as architectural features. No standard UC section could satisfy both the structural requirements and the space needed around the existing concrete beams and so the project’s design incorporates plated column The new steel roof sections throughout, which had to cater for different structure takes shape. sized existing beams on each retained level. Consequently, there three different types of plated columns used on this project – the largest being 505mm-deep × 400mm-wide, with 40mm flanges. Stability for the steel-framed floors and the retained portions of the existing structure is derived from three new concrete cores, all located within the new steel-framed atrium infill on ground, first and second floor level. These tie into the existing structure and support the new floors via a series of bespoke steel cast-in plates. The atrium is centrally located within the development and its completed design features a glazed roof. The atrium is much larger than it previously was in the 1990s, as it has been stripped back to its 1920s version with all of the subsequent additions demolished as part of the early works. The site’s tower crane is also positioned in the atrium and this is providing some of the lifting Bespoke stiffened splice Steel was chosen as it plates allow new steel offered a lightweight capacity for the steelwork erection. columns to bypass the solution that required Working in conjunction with the tower crane existing floor beams. minimal foundation work. are a number of MEWPs and selecting the correct machines was crucial on this scheme. “Selecting the correct access equipment proved challenging due to the minimal permissible loadings on the existing slabs,” says Mr Carrig. “Spreader plates were used to distribute the weight of the MEWP’s on the existing slab at level two, while one of the lightest self-propelled cherry pickers on the market was selected for use on the newly-poured slabs from level three up.” Summing up this unique project, Kieran Fay of Glenbrier Construction says: “Clerys, is a listed building from the 1920s, providing many challenges for Glenbrier and the team, but with a cohesive approach, design and construction work has progressed well on the project. “The modern state-of-the-art design will undoubtedly enhance the mix of old and new within the building, while enhancing its atmosphere for the user and O’Connell Street itself, bringing character to Dublin’s central quarter.” Cellular beams have Clerys Quarter is due to complete in the third been used for service quarter of 2021. T integration.

14 February 2021 NSC Two NEW publications from SCI

High Strength Steel Design and Fire Resistance of Steel Sections Execution Guide (P432) Galvanized to EN ISO 1461 (P429) High strength steel can enable substantial savings in Galvanized steel has been shown to have a lower surface structural weight and material costs and is increasingly emissivity than non-galvanized steel at temperatures being used in a range of applications in the construction below approximately 500°C. The temperature of a industry, particularly for heavy columns, transfer beams, galvanized steel section will therefore increase at a trusses and bridge girders. slower rate than that of an equivalent non-galvanized section, leading to increased fire resistance for fire This new guidance provides advice for designers, exposure periods of up to around 30 minutes. fabricators, product manufacturers and clients on the selection, design and execution of high strength steel This new design guide provides tables to calculate fire structures. It provides comprehensive guidance on when resistances and maximum fire exposure periods for and how the benefits of steels with yield strengths from galvanized steel beams, composite beams, columns, and 420 to 700 MPa can be exploited in practical design plates in tension, according to the Eurocodes and the UK situations in the construction industry. Information on and Irish National Annexes. Design tables in accordance product availability, execution and welding is also given. with BS 5950 are also provided.

SCI has been the trusted source of Both of these new publications are free to information and engineering expertise download form the SCI Bookshop globally for over 30 years. https://portal.steel-sci.com

@SCIsteel steel-construction-institute E: [email protected] | T: +44 (0) 1344 636525 | W: www.steel-sci.com MIXED-USE

FACT FILE 127 Kensington High Street, London Main client: AshbyCapital Architect: Pilbow & Partners Main contractor: ISG Structural engineer: WSP Steelwork contractor: Bourne Steel Steel tonnage: 425t

The new steel frame extends the building to its new five- storey height.

£50M project to create a high- quality commercial and retail space Hybrid design creates is currently underway on one of London’s most prestigious shopping Athoroughfares. landmark structure Occupying the site of the former Pontings Department store which, along with Barkers and Derry & Toms, was one of the three renowned A new steel frame, combined with retained concrete elements, emporiums that once thrived in the vicinity, 127 both of which reuse existing foundations, is helping to create Kensington High Street, which also fronts Wrights Lane, is a project that involves both new and old an economically-designed commercial and retail scheme in structures being combined to create a modern building. central London. “The original Pontings store was demolished and replaced with two newer structures in the 1970s and 80s. We have retained approximately 30% of these buildings and infilled and extended areas with a new steel frame, while also constructing two additional floors to the footprint,” explains ISG Project Director Raymond Faulks. Overall, the new steel frame represents around 40% of the new scheme, with the remaining 60% split between retained and new reinforced concrete elements. The new steel frame extends part of the new building to its new five-storey design, while the retained three-storey concrete parts have been extended to the same height with an additional new concrete frame. Targeting a BREEAM ‘Excellent’ rating, the scheme will accommodate commercial space on all floors, but the ground level is split with retail space taking up the majority of the floorspace. An arcade splits the new building in half, with the north side Erection work was of the ground floor accommodating a Boots store – challenging as the steel frame abuts the adjacent which also occupies the basement - and the south London Underground lines. side having six smaller retail units. The arcade will

16 February 2021 NSC MIXED-USE

“The reuse of the foundations was As well as creating a new Grade A commercial scheme with retail elements, the project will possible as a steel frame with also provide a new entrance to High Street Kensington underground station. composite metal deck offers a relatively light and economic construction solution, compared to other framing methods.”

also provide an access point from Wrights Lane to the adjacent High Street Kensington underground station. Also positioned on Wrights Lane, the main entrance to the offices features a large 9m-high cruciform steel column that creates a 12m-span lobby. Although this part of the scheme is predominantly concrete-framed, a steel column was chosen because it was easier to install and for its aesthetic qualities, as like much of the steelwork, soffits and concrete elements, it will be left exposed within the completed structure. Prior to construction work beginning on site, of the demolition being undertaken. The existing As well as creating new floors, steelwork is also a thorough survey and examination of the site structure required the temporary works to be being used to restore the historic street line along and the existing concrete-framed structure was installed in locations that were within 50mm of the both the Kensington High Street and Wrights undertaken. From this it was deduced that the new structure in numerous areas. Lane elevations. The previous buildings were existing foundations could be reused, with only “Many of the temporary beams and rakers set-back from the basement walls, creating wider minor enhancements if a steel frame was inserted were over 15m-long and needed delivering and pavements. This unnecessary feature is being into the areas that would need to be demolished removing through a very small lifting point. Early rectified with the addition of new steelwork to the in order to create the architectural design for the engagement and design with our specialist supply retained portions of the structure. A new façade, modern structure. chain was key to this element being so successful,” 1.5-wide, is being added to the building. “The reuse of the foundations was possible as says Mr Faulks. ISG will also complete this new elevation a steel frame with composite metal deck offers The new steel frame is mostly erected around a using a handmade light grey brick along with a relatively light and economic construction regular 7.2m column grid pattern, which follows Moleanos stone to provide a contemporary and solution, compared to other framing methods,” the column spacing in the retained portion of the architecturally sympathetic addition to this says WSP Engineer Dan Hagan. scheme. The steelwork supports metal decking to important London thoroughfare. Further explaining the rationale behind the form a composite flooring solution. 127 Kensington High Street is due to complete project team’s chosen methodology, Mr Faulks The uppermost steel level (fifth floor) is set in late 2021. T adds: “The decision to retain, reconfigure and back from the remainder of the structure to form extend, rather than demolish the existing building, a large terrace. This uppermost roof level has has significantly reduced the project programme been designed as a portal-framed pavilion, which and showcases the benefits of close collaboration connects to the frame below. between all project stakeholders to innovate and A new steel core has been erected within this seek the best possible outcomes.” area of the building. It provides stability not only The new building creates 12,081m² of Grade to the steelwork, but also to the retained and new A commercial office space, much of which is concrete elements of the scheme. accommodated within the new steel-framed The nature of the project’s hybrid design, means portion of the scheme. The steel frame starts at that throughout the building there are numerous basement level and is located to the east of the interfaces between steel and concrete frames. site, connecting to a retaining wall that separates One large area with a number of such interfaces the project from the London Underground lines is a mezzanine floor, which is being installed within that serve the adjacent High Street Kensington the double-height ground floor retail zone within station. the retained structure. This new floor level will be The close proximity of Transport for London’s predominantly used as a back-of-house area. assets was another reason for choosing a steel “As the majority of the steelwork will be solution for this part of the scheme. Installing exposed in the final condition, appearance is vital, new piles for a heavier concrete frame, next to the so a significant amount of time was spent at the underground lines, would have been problematic. design stage making sure that the frame not only Prior to the new ground floor being installed, a performed from a structural perspective but also series of temporary raking steel beams had to be satisfied the architectural requirements,” says positioned at basement level to support the site’s Bourne Special Projects Deputy Divisional Director retaining wall. Once the steel frame had advanced Craig Galway. upwards and beyond the ground floor level, and “This is further complicated as much of the support and stability for the retaining wall was steelwork needs to be erected in areas often achieved, the rakers were removed. inaccessible for the tower crane, so it has to be A steel column is “This was quite a challenging procedure as the moved into position and erected using a variety of erected prior to being temporary steel needed to be installed in advance plant and techniques.” encased in concrete.

NSC February 2021 17 SPORT

Stand up for Fulham

One of London’s most famous football grounds is undergoing a significant redevelopment with the construction of a new Riverside Stand.

ituated on the banks of the River Thames, standing terraces behind both goals. of the riverside walkway into a world class Fulham FC have played at Craven Cottage Currently, the club is redeveloping the side of the leisure destination; a pathway that will allow an since 1896, making it one of the oldest ground opposite its famous Johnny Haynes Stand, uninterrupted walk along the banks of the River continuously used stadiums in English the Riverside Stand, which as the name suggests Thames between Hammersmith and Putney Bridges Sfootball. backs on to the adjacent River Thames. and a choice of amenities for visitors to enjoy Renowned for its intimate atmosphere, as the A new two-tiered stand will accommodate throughout the year. fans are close to the pitch, the stadium has seen a restaurants overlooking the river, events spaces, a The project’s main contractor Buckingham Group number of changes over the years. health club complete with roof-top pool, a boutique started on site during the summer of 2019, with the Of particular note was the opening in 1905 of hotel and a roof terrace. It will of course address the demolition of the old stand. This was followed by the first stand designed by the celebrated stadium Club’s operational and sporting requirements during an extensive groundworks programme that included architect Archibald Leitch, which is still in use the football season, but importantly also provide a the installation of a new river wall that will facilitate today as the Johnny Haynes Stand. Mr Leitch also new destination for local residents and visitors to the pathway. designed the famous Cottage, a corner pavilion that the area on non-match days, providing new revenue A basement was excavated, work which saw was common at Scottish football grounds, and is one streams for the client and reaffirming the stadium’s approximately 45,000m³ of material leave the site of the last remaining examples in English football. position at the heart of the community. by river, and then the plot was sheet piled and The other sides of the ground have all seen Designed by architect Populous and engineered waterproofed. changes over the years, most notably the by WSP, the development is not just a sports Steelwork for the stand starts at basement level, construction of seated stands that replaced the structure, it also includes a transformation and this area, along with a central core (there are

18 February 2021 NSC SPORT

FACT FILE Riverside Development, Craven Cottage, Fulham FC Main client: Fulham FC Architect: Populous Main contractor: Buckingham Group Roof stability Structural engineer: WSP Steelwork contractor: Severfield Steel tonnage: 2,600t including all secondary steelwork and temporary fittings Photo: Andy Heffer, Photo:WSP Structures Andy Heffer,

he roof structure is formed by 16 main cantilever trusses that feature tapered plate girders towards the front edge. Out-of-plane forces acting longitudinally along the roof are resisted through bending in Teach of the triangulated roof column sets that cantilever from the superstructure below and support the root of the trusses. Having no lateral cross-bracing was a key architectural driver. So, the in-plane overturning effect from the cantilever roof as well as transverse wind loads are resolved through axial loads in the same column sets that are propped at level five by the raking beams that support the seating tier. A portion of the overturning moment is also resisted by columns forming a Vierendeel frame that runs from the top of the roof down to ground floor. Horizontal components of the axial forces within the raker beams are brought into the floor diaphragms through tie beams at each level with vertical loads taken through the building columns. Much of the overturning moment is reduced at level two where the Vierendeel frame forms a knee joint Roof trusses arrive by river before combining into a V-column arrangement at ground level. This feature, which developed from a desire transport and are lifted into to keep intrusion on the river walk to minimum, serves to reduce the lateral forces by using the buildings own place by a 400t-capacity crane dead weight to counteract the overturning moment in the roof. positioned on a jack-up barge. four stability-giving steel cores in total) were the initial parts to be erected. Once this stability-giving element was completed, steelwork contractor Severfield worked outwards in two directions from this central point to erect the majority of the structure. According to Buckingham Group Project Manager Andrew Mackintosh, the reason for using this sequence of steel erection was because the central core risers provide a main distribution route to/ from the plant deck enclosed within the roof envelope and getting this erected early has allowed the installation of this important equipment to commence early. Overall, the steel-framed Riverside Stand is 113m-long × 30m-wide and 30m-high. It contains six internal levels, including the basement, and the steel design is mostly based around a regular 7.4m x 9m column grid. However, the extremely tight constraints imposed by the river and the field of play has meant that irregular column layouts have invariably been required to maximise the space Visualisation of the within the building, which is also planned around completed Riverside hospitality, health club and hotel uses. ▸20 Stand.

NSC February 2021 19 SPORT

The new stand will enhance supporters’ match day experience with a host of facilities.

▸19 Consequently, at either end of the stand the “In order to improve the programme column spacings take on a far more irregular configuration as this part of the structure many previously concrete designed accommodates the hotel, swimming pool, gym and elements, such as the cores, were conference rooms. Like many stadiums, the tiers are formed with steel rakers that support precast changed to steel.” terracing units. WSP Associate Director Andy Heffer says of 5m (see box, previous page). a number of material options were initially Because the site is extremely confined with little investigated for the scheme, but steel is the or no room for materials to be stored, the trusses traditional choice for large cantilever roof have been assembled at a satellite site in Tilbury structures, which the stand has, while steelwork was Docks. chosen for the main structure and tiers because of “The roof trusses were assembled at the Docks the unique logistical constraints of the site. into seven pairs that included all secondary “In order to improve the programme many steelwork. They were also fire protected and previously concrete designed elements, such as the partially clad, before being floated upriver by barge,” cores, were changed to steel and this has allowed explains Severfield Senior Project Manager Gary the project to be constructed in a partly top-down Dooley. Due to onsite sequence with steel columns springing directly from The journey upriver from Tilbury to Fulham had constraints, roof basement pile caps. This then allowed the steel to be meticulously planned and arranged around low trusses are assembled at Tilbury Docks before frame to get underway with the concrete basement tide. The River Thames, all the way up to Fulham being transported to slab and buried drainage works undertaken after the and beyond, is subject to tidal movements and site by barge. frame was erected.” during high tide the trusses would have been too The form of the building is said to have been high to navigate under some of the river’s bridges. designed to echo the gentle curve of the river. Once the trusses had arrived at the construction Its glass façade will allow natural light into the site, they were lifted into place using a 400t-capacity interiors, providing stunning views from every level, crane positioned on a jack-up barge moored in the while the roof structure is supported by steelwork to river. create the striking visual effect of the roof floating in Each pair of trusses weighed approximately 50t the air, high above the seating tier. and the gaps between each pair were infilled as the The construction of the Riverside Stand’s roof, erection sequence progressed. involves the installation of a series of 35m-long steel In order to achieve the project’s elegantly trusses, which taper down from a maximum depth designed roof, there are supporting columns set- back at each end. To cover the extreme ends of the seating, additional gable trusses, which cantilever 4m beyond the final main truss have been added. These were lifted into place attached to a pair of trusses, creating two slightly heavier pre-assembled triple elements. In conclusion, Mr Mackintosh says: “During this difficult time, our project team has successfully and rapidly adapted to new remote working practices for design coordination and collaboration in order to keep this scheme on schedule. “Buckingham Group, alongside WSP and Severfield have made use of model sharing, via Model showing the MS Teams, Navisworks and other online services, Feature columns adorn steel frame of the new highlighting how everyone has embraced the new the river side of the new stand and its roof. working ‘normal’.” T structure. Image: WSP Structures Photo: WSP Structures

20 February 2021 NSC SPORT

The vertical Vierendeel trusses help to manage the overturning from the cantilevering roof Fulham Stadium trusses. Richard Henderson of the SCI discusses some features of the behaviour.

Vertical Loads description of the behaviour ignores any effect of Between the stability cores, the cantilevering propping from the intermediate floors, the magnitude roof trusses apply a bending moment to the of which is determined by the relative in-plane top of the vertical Vierendeel trusses spanning stiffness of the diaphragms and the bending stiffness between levels 2 and 5. Arranged in storey- of the truss. height rectangular panels, the spaces along the façade are uninterrupted by bracing. A more usual Lateral Loads arrangement of a vertical cantilever truss, used The prevailing south westerly wind loads on the for stability bracing for example, would involve the stand add to the overturning effect of the roof columns continuing to the ground with a tension trusses. When the wind is north-easterly, the and compression applied to the foundations when overturning from the weight of the roof is countered resisting overturning. In this case, at level 2, the as the wind will tend to apply an uplift to the columns rake under the cantilever roof and come projecting structure. The horizontal loads due to together at a common node closer to the line of wind are transferred through the floors by diaphragm column to beam joints are rigid and carry a action of the roof load, thus increasing the reaction at action to the stability cores and do not add to the significant bending moment as well as the axial this point. The floor loads applied to the Vierendeel shear force carried by the Vierendeel trusses. load. The effect of the combined bending and axial columns provide a restoring moment. load means the column elements are substantial. The inclined beam supporting the seats props the Effect of Vierendeel Action The magnitude of the prop force and therefore Vierendeel truss at level 5. The horizontal prop force The absence of diagonal bracing in the vertical the column bending moment can be controlled by in the inclined beam is carried in shear by the vertical trusses means that half the prop force is carried adjusting the rake of the columns from level 2 to the truss and is resolved at level 1. This simplified in each column in shear. At the floor levels, the common node at the ground floor.

NSC February 2021 21 TRANSPORT

Extension cleared for take-off

London Southend Airport is forging ahead with its expansion plans that include an extension to the terminal building’s baggage area.

rior to the aviation downturn caused by the ongoing COVID-19 pandemic, London Southend Airport was reported to be the UK’s fastest growing airport and in 2017 thereP was a 29% increase in passenger numbers taking the figure to more than one million. It is said that the Essex airport has capacity to comfortably handle five million passengers in the near future and take up the slack over the next decade As well as erecting the main frame, before a prospective third runway opens at Heathrow. Border Steelwork Structures also As part of a multi-million-pound ongoing installed the wall and roof cladding. masterplan, the airport owner Stobart Group has lengthened the runway to enable larger aircraft to use London Southend Airport, as well as carrying a number of alterations and expansions to its main terminal building. The steel-framed terminal building was constructed nine years ago, as the Airport geared itself up as a convenient gateway for the London 2012 Olympic Games (see NSC March 2011). One of the important elements of the Airport’s plans for its terminal building is an extension to its Due to the shape of the structure, haul baggage shed (HBS). column spacings “The extension is required in order to comply vary accordingly. with Department for Transport regulations to could begin, a groundworks programme had to be screen luggage using Standard 3,” explains XYZ Rail completed. The work included the installation of & Civils Senior Project Manager Roy Hill. approximately 50 piles, up to 15m in depth, and the “As the Airport grows it needs to have the latest casting of ground beams and the main concrete slab. Standard 3 security X-ray equipment in the HBS, The subsequent steelwork programme was so we are building an extension that wraps around divided into two phases, with the first, which the existing area on three sides to house these new accounted for around four fifths of the overall total, machines as well as an extension to the conveyor erected prior to the first COVID-19 lockdown in system.” March 2020. The project’s steelwork contractor, The existing terminal building is a steel portal Border Steelwork Structures (BSS), also installed The extension frame structure, and so is the extension, which the extension’s cladding, 80% of which was also abuts the existing steel-framed consists of moment connection portal frames complete before the lockdown. terminal building. constructed from 254 UCs and 406 UB main rafters. With easing of restrictions, the phase one The extension structure abuts the existing cladding was completed in August. terminal building, but there is no connection The phasing of the steelwork and cladding between the two steel frames, which are both installation was necessary as the Airport had to structurally independent. maintain its baggage capacity throughout the works. “Once the cladding has been installed the two A temporary baggage carousel, installed to boost will blend and look like one complete building,” capacity before the extension comes online, had to adds Mr Hill. be removed prior to the phase two works beginning. Before the steelwork erection for the extension The HBS wrap-around extension measures

22 February 2021 NSC TRANSPORT

FACT FILE London Southend Airport, haul baggage shed Main client: London Southend Airport part of Stobart Group Architect: CPMS Main contractor: XYZ Rail & Civils Structural engineer: Waldeck Consulting Steelwork contractor: Border Steelwork Structures Steel tonnage: 50t

The extension is structurally independent from the existing terminal.

approximately 47m-long × 39m-wide with extension structure.” a maximum height of 5.2m. Although it is The installation of the steelwork and the cladding independent of the main structure, it does connect was done using the site’s tower crane and one to the existing baggage handling structure’s canopy. mobile crane. The main portal span is 22m-long, while column Because of the proximity of the functioning bay spacings vary due to the shape of the structure, airport, the cranes had to be positioned so they did but they are mainly 6.85m. not over-slew any areas outside of the construction Steelwork has delivered the project’s required One side of the frame has a large opening for site, while a maximum height of any lifting speed of construction. baggage vehicles. This part of the extension will operations was also enforced. have exposed columns, which need to be protected “We are continually liaising with the Airport against vehicular impact load. authorities, to iron out any potential problems,” Explaining the stability system for the standalone says Mr Hill. “We have a security fence around our extension, BSS Technical Manager Ian Elliott site which effectively seals us off from the airfield says: “The lateral load induced by the wind will be and the ‘live’ environment, keeping all of our transferred to the columns via the external cladding operations landside.” and then down to the piled foundations situated in Phase two of the steelwork and cladding was the bearing strata. completed during December, and construction work “Lateral stability is provided in-plane by the on the extension is due to complete in March. moment resisting connections of the portal frame A fit-out programme is then due to begin in June, Construction work is being carried out around structure. Out of plane lateral stability is provided with the new and enlarged HBS coming into full the activities of a live by vertical bracing located on two sides of the operation later this summer (2021). T airport.

NSC February 2021 23 TECHNICAL New Guidance on fire resistance of galvanized steel sections

By Dr Francisco Meza, Principal Engineer, SCI

Introduction Galvanizing to EN ISO 1461[1] is commonly used to provide protection against corrosion for a wide variety of steel components, ranging in size from nuts and bolts to large structural sections. The process involves dipping steel components into molten zinc (which is usually around 450°C) for a few minutes. Unlike a paint coating, the metallurgical bond that is formed through galvanizing becomes part of the steel itself and is not merely a chemical or mechanical bond. As a result, galvanized steel not only provides corrosion protection but also has a high resistance to mechanical damage during handling, storage, transport and erection. The zinc protective layer also provides a reduced surface emissivity of the steel component, which influences the rate at which the temperature of a steel section increases when exposed to a source of heat. Laboratory and full-scale testing[2,3], have demonstrated that below approximately 500°C, the galvanized coating remains stable, and its surface emissivity is around half of that for non- galvanized steel. A galvanized steel section will therefore heat up at a slower Galvanized steel carpark at Sky Headquarters (London). Photo: Philip Durrant rate than an equivalent non-galvanized section which means an increased duration of fire resistance or increased load bearing resistance for a given fire

exposure period. αc is the coefficient of heat transfer by convection, taken asα c = 25 [W/m²K] when the standard temperature-time curve is used

Temperature increase of a steel member under fire conditions θg is the gas temperature in the vicinity of the fire exposed member [°C]

Heat transfer to a steel member is predominantly by two mechanisms — θa is the surface temperature of the member [°C] radiation and convection. EN 1993-1-2[4], clause 4.2.5.1 gives a simple heat transfer model, which is used to determine the increase in temperature of a The radiant heat flux is calculated as: h· = ϕ ε ε σ[(θ + 273)⁴ -(θ + 273)⁴] [W/m²] Eq. (4) steel member θa,t over a small time interval t of no larger than 5 seconds. net,r m f r a This simple heat transfer model is given by equation (1). where: Δ Δ A /V ϕ is the configuration factor, conservatively taken as 1.0 m · Δ at ksh hnetΔt K Eq. (1) ca ρ a εm is the surface emissivity of the member where: σ is the Stephan Boltzmann constant, σ = 5.67 × 10-8 [W/m2K4] · ε is the emissivity of the fire, which is generally taken as 1.0 hnet is the design value of net heat flux per unit area [W/m²] f θ is the effective radiation temperature of the fire environment, which ca is the specific heat of steel [J/kgK] r for fully fire engulfed members may be taken asθ = θ [°C] ρa is the density of steel [kg/m³] r g A θ is the surface temperature of the member [°C] m is the section factor of the member, per unit length [m-1] r V The density and specific heat of galvanized steel is the same as that of non- ksh is a correction factor, commonly attributed to the shadow effect of flanges galvanized steel, and they can be determined in accordance with EN 1993-1-2, clauses 3.2.2 and 3.4.1.2, respectively. The surface emissivity of non-galvanized

Equation (1) has to be solved following an iterative procedure because the steel is given in EN 1993-1-2, clause 2.2 as εm = 0.70 for all temperatures. An · emissivity value for galvanized steel has now been derived from studies by a specific heat ca and the net heat flux hnet are both temperature dependent. The temperature reached by a steel member at a given time in a fire can then be number of European researchers, and an amendment to EN 1993-1-2 will be included in the next revision of the standard (due to be published in about determined by summing the small increments in temperature θa,t over the total time of fire exposure. 2023) in which the surface emissivity for galvanized steel will be given as: Δ εm = 0.35 for θa ≤500°C · ε = 0.70 for θ >500°C The net heat flux hnet to the surface of a steel member is given in m a Therefore, when calculating the increase in temperature of a galvanized steel EN 1991-1-2, clause 3.1 as the sum of the heat transfers by convection hnet,c and · member, all the required parameters (with the exception of the surface by radiation hnet,r , expressed as: · · · emissivity) are the same as those used to determine the increase in temperature hnet = hnet,c + hnet,r [W/m²] Eq. (2)

of a geometrically equivalent (i.e. same section factor Am⁄V and correction

The convective heat flux is calculated as: factor ksh) non-galvanized steel member. The slower temperature increase in a · galvanized steel member is therefore only due to the lower radiant heat flux hnet,c =αc (θg+θa ) [W/m²] Eq. (3) where: introduced, as shown by equation (4). ▸26

24 February 2021 NSC Visit www.SteelConstruction.info

All you need to know about Steel Construction

Everything construction professionals need to know to The site also provides a single portal, one-stop-shop optimise the design and construction of steel-framed access to key resources including: buildings and bridges can be easily accessed in one place at www.SteelConstruction.info, the largest and • The Green Books • Advisory Desk Notes most comprehensive database of steel design guidance • The Blue Book • Steel section tables and advice available anywhere. • Eurocode design guides • Steel design tools

This online encyclopedia is an invaluable ﬁ rst stop Explore the full content of www.SteelConstruction.info for steel construction information. Produced and using the index of main articles in the quick links menu, or maintained by industry experts, detailed guidance alternatively use the powerful search facility. is provided on a wide range of key topics including sustainability and cost as well as design and construction.

This is supported by some 250 freely downloadable PDF documents and over 470 case studies of real projects. TECHNICAL

Figure 1: Strength and stiffness reduction factors of steel at elevated temperatures Figure 2: Temperature rise of galvanized and non-galvanized steel sections subject to the standard nominal fire curve

▸24 Fire resistance longer fire exposure than an equivalent non-galvanized steel member. The design resistance of a steel member in fire is determined in a similar manner as the design resistance at room temperature, with an allowance made Benefit of using galvanized steel in fire for the reduction in the relevant mechanical properties of the steel at elevated The benefit of utilizing galvanized steel members for fire resistance is apparent temperatures. When the resistance is not governed by member instabilities, in structures that require short fire resistance periods, that is, 15 or 30 minutes such as the resistance of tension members, or the bending moment resistance of fire exposure, where the temperature reached by the galvanized steel of laterally restrained beams, the only material parameter affecting the members is around 500°C. Examples of structures that require such fire resistance is the yield strength, and its reduction with temperature is accounted resistance periods include car parks and single-storey residential/office [5] for through the reduction factor ky, = fy, ⁄fy , where fy, is the yield strength at buildings . There may also be benefit in using galvanized steel for other types

elevated temperature, and fy is the yieldθ θ strength at roomθ temperature. When of structures, such as single storey industrial buildings or some multi-storey the resistance is governed by member instabilities, such as columns susceptible office buildings, where the use of sprinklers may enable a reduction of the to flexural buckling, the resistance is also affected by the reduction in stiffness minimum fire period to 30 minutes. of the steel with temperature, which is accounted for through the reduction Another important factor that affects the rate at which the temperature in a

factor kE, = Ea, ⁄Ea , where Ea, is the slope of the linear elastic range at elevated steel member increases is the section factor. In EN 1993-1-2, the section factor

temperature,θ andθ Ea is the modulusθ of elasticity at room temperature. is defined as the surface area of the member exposed to a fire per unit length,

EN 1993-1-2, Table 3.1 gives values for ky, and kE, at discrete temperatures Am, divided by the volume per unit length, V. Therefore, a beam exposed to a

ranging from 20°C to 1200°C. These are shownθ in Figureθ 1, and are applicable fire on four sides has a higher section factor than an equivalent one exposed on to both galvanized and non-galvanized steel. Therefore, for a given fire three sides. This factor has the same effect irrespective of whether the section is exposure, the slower temperature increase in galvanized steel can be expected galvanized or non-galvanized, as it only depends on the geometric proportions to lead to structural members with a higher fire resistance than an equivalent of the cross-section. non-galvanized steel member. Or put in other words, when subject to the same Figure 2 compares the rise in steel temperature of galvanized and non- loading conditions, a galvanized steel member can be expected to achieve a galvanized steel beams for three different Universal Beam sections

Nationwide delivery of all Structural Steel Sections GRADES S355JR/J0/J2 Beams • Columns Channel • Angle Flats • Uni Flats Saw Cutting Shot Blasting RAINHAM STEEL Painting • Drilling Head Office: Bury Office: Scunthorpe Office: Hot & Cold Structural Tel: 01708 522311 [email protected] 01708 522311 01617 962889 01724 273282 Hollow Sections Advanced steel sections available ex-stock MULTI PRODUCTS ARRIVE ON ONE VEHICLE

26 February 2021 NSC TECHNICAL

Figure 3: Fire resistance of galvanized and non-galvanized steel beams exposed to fire on three Figure 4: New SCI publication (P429) for the fire design of galvanized steel members sides as a function of time

(533 × 210 × 122, 254 × 146 × 43, 406 × 140 × 39) exposed to fire from three provided to illustrate the use of the tables. -1 -1 -1 sides with section factors ksh [Am⁄V]m of 75 m , 109 m and 170 m , The publication is available as a free download from the SCI bookshop and respectively. The figure shows that by using galvanized steel, the maximum fire Steelbiz (https://portal.steel-sci.com/shop.html) and Galvanizers Association exposure can be increased by up to 23 %. If the gains in fire exposure time using website (https://www.galvanizing.org.uk) galvanized steel are translated into increased resistance, the advantages are more pronounced. Figure 3 shows that for the steel beams discussed, the References resistance (or utilization) at 15 minutes fire exposure can be increased by up to [1] EN ISO 1461: 2009 Hot dip galvanized coatings on fabricated iron and steel articles. 35 % as a result of galvanizing. Specifications and test methods, CEN, 2009 [2] HEINISUO, M. Effect of zinc coating to the resistance of WQ-beam bottom flange in SCI publication for the design of galvanized steel members in fire fire, Tampere University of Technology, 2014 As shown here, the process of designing a steel member in fire is made [3] GAIGL, C. and MENSINGER, M. Fire resistance of galvanized structures, 25th complicated primarily due to the need to know the temperature of the member International Galvanizing Conference (Intergalva 2018), Berlin, Germany, 2018 at the time of interest. This is in essence an iterative process which requires [4] EN 1993-1-2: 2005 Eurocode 3: Design of steel structures – Part 1-2: General rules solving equation (1) hundreds of times. SCI has recently published a design -Structural fire design, CEN, 2005 guide which greatly simplifies the design of galvanized steel members in fire, [5] The Building Regulations 2010 Approved Document B: Fire safety (Amendments to avoiding any need for iteration[6] (Figure 4). The publication includes design the Approved Documents 2019 edition), HM Government, UK, 2020 tables to calculate fire resistances and maximum fire exposure periods for [6] MEZA, F. and BADDOO, N. Fire resistance of steel sections galvanized to EN ISO galvanized steel beams, composite beams, columns, and plates in tension, 1461 (P429), SCI, 2020 according to the Eurocodes[4,7], and the UK and Irish National Annexes. Design [7] EN 1994-1-2: 2005+A1:2014 Eurocode 4: Design of composite steel and concrete tables in accordance with BS 5950[8] are also provided. The design tables clearly structures – Part 1-2: General rules – Structural fire design, CEN, 2014 show where the use of galvanized steel leads to an increase in fire resistance or [8] BS 5950-8: 2003 Structural use of steelwork in building – Part 8: Code of practice fire exposure compared to non-galvanized steel. Worked examples are also for fire resistant design, BSI, 2003

NSC February 2021 27 ADVISORY DESK / CODES & STANDARDS AD 458: Web panel shear resistance

This AD relates to a bolted moment-resisting the column web panel. This requires knowledge rows, and,

connection and the determination of the shear of what the applied shear force is. Although this 2. A “more accurate” value, taken as zeq from the force in the column web panel, and in particular sounds straightforward, the process described method described clause 6.3.3.1 the selection of a lever arm as part of that above determines the resistances, not the applied calculation. In the following advice, the axial force forces. Clause 6.3.3.1 covers the calculation of joint

in the beam is assumed to be zero, for simplicity. In many cases, especially if the resistance of the stiffness; the calculation of zeq is part of the In a moment resisting connection designed in connection is not greatly in excess of the applied process. It is very likely that the “more accurate”

accordance with BS EN 1993-1-8, the total tension, moment, it would not be too conservative to value zeq is smaller than the dimension described in being the summation of the force in each bolt row, assume the applied shear force to be equal to the (1) above, and thus would produce a higher shear cannot exceed the resistance of the compression summation of the bolt row resistances. force. zone, or the shear resistance of the column web If more effort is worthwhile, BS EN 1993-1-8 If designers are calculating the shear force in the panel. If necessary, the forces in the bolt rows are clause 5.3(3) specifies that the applied shear force web panel based on clause 5.3(3) they should be reduced. is given by the applied moment, divided by a lever careful to use the “more accurate” value, as use of The moment resistance of the connection is arm, z. Note that this correctly relates to the the approximate value is not always conservative. then calculated by multiplying the resistances of applied moment, not the moment resistance. Calculation of the “more accurate” value is not the bolt rows (reduced if necessary) by their lever The lever arm, z, is determined via a forward without its own challenges, so designers should arms. The connection resistance is then compared reference to clause 6.2.7, which in turn refers to remember that assuming the applied shear force to the applied moment. Figure 6.15. The bottom row in Table 6.15 covers to be equal to the summation of the bolt row It should be noted that in this process, the bolted connections with two or more bolt rows in resistances will be conservative, and probably resistance of the connection is calculated. tension – the common case. Two alternatives are economical in terms of design effort. If the resistance if the column web panel was given for the lever arm z: limiting the development of tension in the bolt Contact: SCI Advisory rows, and thus limiting the moment resistance of 1. The distance from the centre of the compression Tel: 01344 636555 the connection, it may be appropriate to reinforce flange to mid-way between the two furthest bolt Email: [email protected]

New and revised codes and standards

From BSI Updates January 2021

BS EN PUBLICATIONS PAS 79-2:2020 metallic blast-cleaning abrasives. Determination Fire risk assessment. Housing. Code of practice of water-soluble contaminants by conductivity BS EN 17412-1:2020 supersedes PAS 79:2012 measurement Building Information Modelling. Level of will supersede BS EN ISO 11127-6:2011 Information Need. Concepts and principles no current standard is superseded EN 15941 BRITISH STANDARDS REVIEWED AND Sustainability of construction works. Data quality BS EN 17423:2020 CONFIRMED for environmental assessment of products and Energy performance of buildings. Determination BS EN ISO 9972:2015 construction works. Selection and use of data and reporting of Primary Energy Factors (PEF) Thermal performance of buildings. Determination will supersede PD CEN/TR 15941:2010 and CO₂ emission coefficient. General Principles, of air permeability of buildings. Fan pressurization Module M1-7 BS 40101 method no current standard is superseded Building Performance Evaluation BS EN 16687:2015 will supersede None Construction products. Assessment of release of BS IMPLEMENTATIONS dangerous substances. Terminology DRAFT BRITISH STANDARDS FOR PUBLIC BS ISO 20414:2020 BS ISO 16540:2015 COMMENT – ADOPTIONS Fire safety engineering. Verification and validation Corrosion of metals and alloys. Methodology for protocol for building fire evacuation models determining the resistance of metals to stress 20/30426069 DC no current standard is superseded corrosion cracking using the four-point bend BS EN ISO 3834-1 Quality requirements for method fusion welding of metallic materials. Criteria for the selection of the appropriate level of quality PUBLICLY AVAILABLE SPECIFICATIONS requirements NEW WORK STARTED Comments for the above document were required by 19 PAS 79-1:2020 January, 2021 Fire risk assessment. Premises other than housing. EN ISO 11127-6 Code of practice Preparation of steel substrates before application of supersedes PAS 79:2012 paints and related products. Test methods for non-

28 February 2021 NSC NSC online more than just a magazine

You can read this issue and all previous issues All the content of NSC is also available on our website of NSC going back to 2005 online as digital at newsteelconstruction.com. Like the magazine, the magazines. You can read it on your computer, front page is divided into sections like News, Features your tablet or your phone. And it comes with and Technical. Once again, it’s all cross referenced enhancements like links to further information with links to steelconstruction.info, and contains on steelconstruction.info, and the ability to extra video content. And it’s all fully searchable with share, bookmark, print and download pages. information going back to January 2005. 50 YEARS AGO

FROM Building with Steel November 1970

1 This latest house from Michael Manser has a structural steel frame as have many of his previous designs. The photographs show how the steel is an integral part of the building and contributes to its clean appearance and sharp detailing while the text gives brief details of the general design. The owners Mr and Mrs J. M. Howard required a small weekend house in which they could live comfortably, all the time if necessary. The site is on high ground near Horsmonden and was part of the estate of Capel Manor, a grandiose Victorian mansion which was demolished after the war. All that remains of the previous structure are the foundations, the steps and ornate balustrade from one level to the other, and the shell of the original Winter Garden. These are all stone constructions and are quite stable. The house is on the upper terrace from which there are long southern, eastern and western views, in particular to the hill top town of Goudhurst. The flat plateau on which the house is located is surrounded by forest trees and tiered banks of rhododendron bushes. As the remains of the terrace and stone stairs gave a strong axiality to the site it was decided to place the new house on the axis and to put a swimming pool in the Winter Garden. The new house was lined up with the existing stonework in height and proportions and the design was kept simple.

30 February 2021 NSC 50 YEARS AGO

Michael Manser had had considerable experience of steel-framed structures for houses and he has put this to use in the Howard house. The steelwork consists of roof members, perimeter and transverse, and four supporting columns. The structural elements are exposed and, as can be seen, their simple directness 3 contributes greatly to the overall aesthetic. The columns sit on a concrete podium which is clad in dark blue quarry tiles. Under the podium is the cellar of the old house and this has been used for the furnace storage etc. The walls are entirely bronze tinted glass with sliding panes where access is required. Heating is by ducted warm air supplied from the basement furnace.

1. The house seen across the swimming pool in the old winter garden 2. The terraces of the old house 3. Detail showing the perimeter steel and main beams 4. lnterior showing the exposed steel beams 5. Kitchen with stainless steel worktop 6. lnterior again showing exposed beams and the effect of the bronze tinted glass

Architects Michael Manser and Associates Structural Engineers Hockley and Dawson Quantity Surveyors Widnell and Trollope 4

6 5

Capel Manor House in Horsmonden, Kent, is now widely regarded as one of the finest examples of Modernist architecture in the UK. It is Grade II* listed and has been designated a World Heritage Site. There is a scale model of the house in London’s Victoria and Albert Museum.

NSC February 2021 31 LISTINGS Steelwork contractors for buildings Membership of BCSA is open to any Steelwork Contractor who has a fabrication facility within the United Kingdom or Republic of Ireland. Details of BCSA membership and services can be obtained from Lorraine MacKinder, Marketing and Membership Administrator, The British Constructional Steelwork Association Limited, Unit 4 Hayfield Business Park, Field Lane, Auckley, Doncaster DN9 3FL Tel: 020 7747 8121 Email: [email protected]

Applicants may be registered in one or more Buildings category to undertake the fabrication and the responsibility for any design and erection of: Notes C Heavy industrial platework for plant structures, bunkers, N Large grandstands and stadia (over 5000 persons) (1) Contracts which are primarily steelwork hoppers, silos etc Q Specialist fabrication services (eg bending, cellular/castellated but which may include associated works. The steelwork contract value for which a D High rise buildings (offices etc over 15 storeys) beams, plate girders) company is pre-qualified under the Scheme E Large span portals (over 30m) R Refurbishment is intended to give guidance on the size of F Medium/small span portals (up to 30m) and low rise S Lighter fabrications including fire escapes, ladders and catwalks steelwork contract that can be undertaken; buildings (up to 4 storeys) where a project lasts longer than a year, the value is the proportion of the steelwork G Medium rise buildings (from 5 to 15 storeys) FPC Factory Production Control certification to BS EN 1090-1 contract to be undertaken within a 12 H Large span trusswork (over 20m) 1 – Execution Class 1 2 – Execution Class 2 month period. J Tubular steelwork where tubular construction forms a 3 – Execution Class 3 4 – Execution Class 4 Where an asterisk (*) appears against any major part of the structure BIM BIM Level 2 assessed company’s classification number, this indicates K Towers and masts QM Quality management certification to ISO 9001 that the assets required for this classification L Architectural steelwork for staircases, balconies, canopies etc SCM Steel Construction Sustainability Charter level are those of the parent company. M Frames for machinery, supports for plant and conveyors (l = Gold, l = Silver, l = Member)

Company name Tel C D E F G H J K L M N Q R S QM FPC BIM SCM Guide Contract Value (1) A C Bacon Engineering Ltd 01953 850611 l l l l l l 2 Up to £3,000,000 Adey Steel Ltd 01509 556677 l l l l l l l l l l l ✔ 3 ● Up to £4,000,000 Adstone Construction Ltd 01905 794561 l l l l l ✔ 2 ✔ ● Up to £3,000,000 Advanced Fabrications Poyle Ltd 01753 653617 l l l l l l l l ✔ 2 Up to £800,000 AJ Engineering & Construction Services Ltd 01309 671919 l l l l l l l l ✔ 4 ● Up to £3,000,000 Angle Ring Company Ltd 0121 557 7241 l ✔ 4 Up to £1,400,000* Arminhall Engineering Ltd 01799 524510 l l l l l l l l ✔ 2 Up to £800,000 Arromax Structures Ltd 01623 747466 l l l l l l l l l 2 Up to £800,000 ASME Engineering Ltd 020 8966 7150 l l l l l l l l ✔ 4 ● Up to £4,000,000 Atlasco Constructional Engineers Ltd 01782 564711 l l l l l l l l ✔ 2 Up to £1,400,000 B D Structures Ltd 01942 817770 l l l l l l l l ✔ 2 ✔ ● Up to £1,400,000 Ballykine Structural Engineers Ltd 028 9756 2560 l l l l l l l ✔ 4 ● Up to £1,400,000 Barnshaw Section Benders Ltd 0121 557 8261 l ✔ 4 Up to £1,400,000 BHC Ltd 01555 840006 l l l l l l l l l l l ✔ 4 ✔ ● Above £6,000,000 Billington Structures Ltd 01226 340666 l l l l l l l l l l l l l ✔ 4 ✔ ● Above £6,000,000 Border Steelwork Structures Ltd 01228 548744 l l l l l l l 4 Up to £3,000,000 Bourne Group Ltd 01202 746666 l l l l l l l l l l l l l ✔ 4 ✔ ● Above £6,000,000 Briton Fabricators Ltd 0115 963 2901 l l l l l l l l l l l l ✔ 4 Up to £6,000,000 Cairnhill Structures Ltd 01236 449393 l l l l l l l ✔ 4 ● Up to £6,000,000 Caunton Engineering Ltd 01773 531111 l l l l l l l l l l l l ✔ 4 ✔ ● Above £6,000,000 Cementation Fabrications 0300 105 0135 l l l l l l l l l l ✔ 3 ● Up to £6,000,000 Cleveland Bridge UK Ltd 01325 381188 l l l l l l l l l l l l l l ✔ 4 ● Above £6,000,000 CMF Ltd 020 8844 0940 l l l l l l ✔ 4 Up to £6,000,000 Cook Fabrications Ltd 01303 893011 l l l l l l l 2 Up to £1,400,000 Coventry Construction Ltd 024 7646 4484 l l l l l l l l l ✔ 4 Up to £1,400,000 D H Structures Ltd 01785 246269 l l l l 2 Up to £40,000 D Hughes Welding & Fabrication Ltd 01248 421104 l l l l l l l l l l ✔ 4 Up to £400,000 Duggan Steel 00 353 29 70072 l l l l l l l l l l ✔ 4 Up to £6,000,000 ECS Engineering Services Ltd 01773 860001 l l l l l l l l l l l ✔ 4 ● Up to £3,000,000 Elland Steel Structures Ltd 01422 380262 l l l l l l l l l l l l ✔ 4 ✔ ● Up to £6,000,000 EvadX Ltd 01745 336413 l l l l l l l l l ✔ 3 ● Up to £3,000,000 Four Bay Structures Ltd 01603 758141 l l l l l l l l l 2 Up to £1,400,000 Four-Tees Engineers Ltd 01489 885899 l l l l l l l l l l ✔ 3 ● Up to £2,000,000 Fox Bros Engineering Ltd 00 353 53 942 1677 l l l l l l l l 2 Up to £2,000,000 Gorge Fabrications Ltd 0121 522 5770 l l l l l l l ✔ 2 Up to £1,400,000 Company name Tel C D E F G H J K L M N Q R S QM FPC BIM SCM Guide Contract Value (1)

32 February 2021 NSC LISTINGS

Company name Tel C D E F G H J K L M N Q R S QM FPC BIM SCM Guide Contract Value (1) G.R. Carr (Essex) Ltd 01286 535501 l l l l l l l ✔ 4 Up to £800,000 H Young Structures Ltd 01953 601881 l l l l l l l ✔ 4 ✔ ● Up to £3,000,000 Had Fab Ltd 01875 611711 l l l l l ✔ 4 Up to £3,000,000 Hescott Engineering Company Ltd 01324 556610 l l l l l l l ✔ 2 Up to £3,000,000 Intersteels Ltd 01322 337766 l l l l l l l l l l ✔ 3 Up to £3,000,000 J & A Plant Ltd 01942 713511 l l l 4 Up to £40,000 James Killelea & Co Ltd 01706 229411 l l l l l l l l 4 Up to £6,000,000* Kiernan Structural Steel Ltd 00 353 43 334 1445 l l l l l l l l l l l l l ✔ 4 ✔ ● Above £6,000,000 Kloeckner Metals UK Westok 0113 205 5270 l ✔ 4 ● Up to £6,000,000 LA Metalworks Ltd 01707 256290 l l l l l l ✔ 2 Up to £2,000,000 Leach Structural Steelwork Ltd 01995 640133 l l l l l l ✔ 2 ● Up to £6,000,000 Legge Steel (Fabrications) Ltd 01592 205320 l l l l l l l l 3 Up to £800,000 Littleton Steel Ltd 01275 333431 l l l l l ✔ 3 Up to £1,400,000 M Hasson & Sons Ltd 028 2957 1281 l l l l l l l l l ✔ 4 ● Up to £3,000,000 M&S Engineering Ltd 01461 40111 l l l l l l 3 Up to £2,000,000 Mackay Steelwork & Cladding Ltd 01862 843910 l l l l l l l ✔ 4 Up to £1,400,000 Maldon Marine Ltd 01621 859000 l l l l l l ✔ 3 Up to £1,400,000 Mifflin Construction Ltd 01568 613311 l l l l l 3 Up to £3,000,000 Murphy International Ltd 00 353 45 431384 l l l l l l l ✔ 4 Up to £1,400,000 Newbridge Engineering Ltd 01429 866722 l l l l l l l l l ✔ 4 ● Up to £2,000,000 North Lincs Structures 01724 855512 l l l l l 2 Up to £800,000 Nusteel Structures Ltd 01303 268112 l l l l l ✔ 4 ● Up to £6,000,000 Painter Brothers Ltd 01432 374400 l l l l l l ✔ 3 Up to £6,000,000* Peter Marshall (Steel Stairs) Ltd 0113 307 6730 l l ✔ 2 Up to £1,400,000* PMS Fabrications Ltd 01228 599090 l l l l l l l l l 3 Up to £1,400,000 Robinson Structures Ltd 01332 574711 l l l l l l ✔ 3 Up to £2,000,000 S H Structures Ltd 01977 681931 l l l l l l l l l l l ✔ 4 ✔ ● Up to £3,000,000 SAH Luton Ltd 01582 805741 l l l l l l l 2 Up to £800,000 SDM Fabrication Ltd 01354 660895 l l l l l l l l l ✔ 4 Up to £2,000,000 Severfield plc 01845 577896 l l l l l l l l l l l l l l ✔ 4 ✔ ● Above £6,000,000 SGC Steel Fabrication 01704 531286 l l l l ✔ 2 Up to £200,000 Shaun Hodgson Engineering Ltd 01553 766499 l l l l l l l ✔ 3 Up to £800,000 Shipley Structures Ltd 01400 251480 l l l l l l l l l 2 Up to £3,000,000 Snashall Steel Fabrications Co Ltd 01300 345588 l l l l l l l 2 ✔ Up to £2,000,000 South Durham Structures Ltd 01388 777350 l l l l l 2 Up to £800,000 Southern Fabrications (Sussex) Ltd 01243 649000 l l l l l l ✔ 2 Up to £1,400,000 Steel & Roofing Systems 00 353 56 444 1855 l l l l l l l l l ✔ 4 Up to £4,000,000 Taunton Fabrications Ltd 01823 324266 l l l l ✔ 2 ● Up to £2,000,000 Taziker Industrial Ltd 01204 468080 l l l l l l l l l ✔ 3 Above £6,000,000 Temple Mill Fabrications Ltd 01623 741720 l l l l l l l l ✔ 2 Up to £400,000 Traditional Structures Ltd 01922 414172 l l l l l l l l l ✔ 3 ✔ ● Up to £2,000,000 TSI Structures Ltd 01603 720031 l l l l l l l 2 ✔ Up to £2,000,000 Underhill Engineering Ltd 01752 752483 l l l l l l l l ✔ 4 ✔ Up to £3,000,000 W I G Engineering Ltd 01869 320515 l l l ✔ 2 Up to £400,000 Walter Watson Ltd 028 4377 8711 l l l l l l ✔ 4 Above £6,000,000 Westbury Park Engineering Ltd 01373 825500 l l l l l l l l l l ✔ 4 ● Up to £800,000 William Haley Engineering Ltd 01278 760591 l l l ✔ 4 ● Up to £6,000,000 William Hare Ltd 0161 609 0000 l l l l l l l l l l l l l l ✔ 4 ✔ ● Above £6,000,000 Company name Tel C D E F G H J K L M N Q R S QM FPC BIM SCM Guide Contract Value (1)

NSC February 2021 33 LISTINGS Steelwork contractors for bridgeworks

The Register of Qualified Steelwork Contractors Scheme for Bridgeworks (RQSC) is open to any Steelwork Contractor who has a fabrication facility within the UK or European Union.

Applicants may be registered in one or more category to undertake the fabrication and the responsibility for any design and erection of: Notes (1) Contracts which are primarily steelwork but which FB Footbridges FRF Factory-based bridge refurbishment may include associated works. The steelwork contract CF Complex footbridges AS Ancilliary structures in steel associated with bridges, footbridges or value for which a company is pre-qualified under the SG Sign gantries sign gantries (eg grillages, purpose-made temporary works) Scheme is intended to give guidance on the size of PG Bridges made principally from plate girders steelwork contract that can be undertaken; where TW Bridges made principally from trusswork QM Quality management certification to ISO 9001 a project lasts longer than a year, the value is the BA Bridges with stiffened complex platework FPC Factory Production Control certification to BS EN 1090-1 proportion of the steelwork contract to be undertaken (eg in decks, box girders or arch boxes) 1 – Execution Class 1 2 – Execution Class 2 within a 12 month period. CM Cable-supported bridges (eg cable-stayed or 3 – Execution Class 3 4 – Execution Class 4 suspension) and other major structures Where an asterisk (*) appears against any company’s (eg 100 metre span) BIM BIM Level 2 compliant classification number, this indicates that the assets required MB Moving bridges SCM Steel Construction Sustainability Charter for this classification level are those of the parent company. SRF Site-based bridge refurbishment (l = Gold, l = Silver, l = Member)

NHSS (1) BCSA steelwork contractor member Tel FB CF SG PG TW BA CM MB SRF FRF AS QM FPC BIM 19A 20 SCM Guide Contract Value AJ Engineering & Construction Services Ltd 01309 671919 l l l l l l l ✓ 4 l Up to £3,000,000 Billington Structures Ltd 01226 340666 l l l l l l ✓ 4 ✓ ✓ ✓ l Above £6,000,000 Bourne Group Ltd 01202 746666 l l l l l ✓ 4 ✓ ✓ l Above £6,000,000 Briton Fabricators Ltd 0115 963 2901 l l l l l l l l l l l ✓ 4 ✓ Up to £6,000,000 Cairnhill Structures Ltd 01236 449393 l l l l l l l l l l ✓ 4 ✓ ● Up to £6,000,000 Cementation Fabrications 0300 105 0135 l l l l l l ✓ 3 ✓ l Up to £6,000,000 Cleveland Bridge UK Ltd 01325 381188 l l l l l l l l l l l ✓ 4 ✓ ✓ l Above £6,000,000 D Hughes Welding & Fabrication Ltd 01248 421104 l l l l l l l ✓ 4 ✓ Up to £400,000 Donyal Engineering Ltd 01207 270909 l l l l l ✓ 3 ✓ l Up to £1,400,000 ECS Engineering Services Ltd 01773 860001 l l l l l l ✓ 3 l Up to £3,000,000 Four-Tees Engineers Ltd 01489 885899 l l l l l l l l l ✓ 3 ✓ l Up to £2,000,000 Kiernan Structural Steel Ltd 00 353 43 334 1445 l l l l l l ✓ 4 ✓ ✓ l Above £6,000,000 M Hasson & Sons Ltd 028 2957 1281 l l l l l l l l l l ✓ 4 ✓ l Up to £3,000,000 Millar Callaghan Engineering Services Ltd 01294 217711 l l l l l l l l l l l ✓ 4 ✓ Up to £1,400,000 Murphy International Ltd 00 353 45 431384 l l l l l l l ✓ 4 ✓ Up to £1,400,000 Nusteel Structures Ltd 01303 268112 l l l l l l l l l l l ✓ 4 ✓ ✓ l Up to £6,000,000 S H Structures Ltd 01977 681931 l l l l l l l l l l l ✓ 4 ✓ ✓ l Up to £3,000,000 Severfield (UK) Ltd 01204 699999 l l l l l l l l l l l ✓ 4 ✓ ✓ ✓ l Above £6,000,000 Shaun Hodgson Engineering Ltd 01553 766499 l ✓ 3 Up to £800,000 Structural Fabrications Ltd 01332 747400 l l l l l l l l ✓ 3 l Up to £1,400,000 Taziker Industrial Ltd 01204 468080 l l l l l l l l l ✓ 3 ✓ ✓ Above £6,000,000 Underhill Engineering Ltd 01752 752483 l l l l l l l l ✓ 4 ✓ ✓ Up to £3,000,000 William Hare Ltd 0161 609 0000 l l l l l l l l l l ✓ 4 ✓ ✓ ✓ l Above £6,000,000 Non-BCSA member Allerton Steel Ltd 01609 774471 l l l l l l l l 4 ✓ Up to £4,000,000 Centregreat Engineering Ltd 029 2046 5683 l l l l l l l l l l ✓ 4 Up to £2,000,000 Cimolai SpA 01223 836299 l l l l l l l l l l l ✓ 4 ✓ ✓ Above £6,000,000 CTS Bridges Ltd 01484 606416 l l l l l l l l l l ✓ 4 ✓ l Up to £1,400,000 Ekspan Ltd 0114 261 1126 l l l l l l ✓ 2 Up to £400,000 Eiffage Metal 00 33 388 946 856 l l l l l l l ✓ 4 Above £6,000,000 Francis & Lewis International Ltd 01452 722200 l ✓ 4 ✓ l Up to £2,000,000 Harrisons Engineering (Lancashire) Ltd 01254 823993 l l l l l l l l ✓ 3 ✓ Up to £1,400,000 Hollandia Infra BV 00 31 180 540 540 l l l l l l l l l l l ✓ 4 Above £6,000,000* HS Carlsteel Engineering Ltd 020 8312 1879 l l l ✓ 3 ✓ Up to £200,000 IHC Engineering (UK) Ltd 01773 861734 l ✓ 3 ✓ Up to £200,000 In-Spec Manufacturing Ltd 01642 210716 l l l ✓ 4 ✓ Up to £800,000 Kelly’s Welders & Blacksmiths Ltd 01383 512 517 l ✓ 2 ✓ Up to £200,000 Lanarkshire Welding Company Ltd 01698 264271 l l l l l l l l l l l ✓ 4 ✓ ✓ l Up to £3,000,000 Total Steelwork & Fabrication Ltd 01925 234320 l l l l l l ✓ 3 ✓ Up to £3,000,000 Victor Buyck Steel Construction 00 32 9 376 2211 l l l l l l l l l l l ✓ 4 ✓ ✓ l Above £6,000,000 Corporate Members Corporate Members are clients, professional offices, educational establishments etc which support the development of national specifications, quality, fabrication and erection techniques, overall industry efficiency and good practice.

Company name Tel Company name Tel Company name Tel Gene Mathers 0115 974 7831 Inspire Insurance Services 02476 998924 Sandberg LLP 020 7565 7000 Griffiths & Armour 0151 236 5656 Keiths Welding Limited 07791 432 078 Structural & Weld Testing Services Ltd 01795 420264 Highways England Company Ltd 08457 504030 Paul Hulme Engineering Ltd 07801 216858 SUM Ltd 0113 242 7390

34 February 2021 NSC LISTINGS Industry Members Industry Members are those principal companies involved in the direct supply to all or some Steelwork Contractor Members of components, materials or products. Industry member companies must have a registered office within the United Kingdom or Republic of Ireland.

QM Quality management certification to ISO 9001 CA Conformity Assessment SCM SfL FPC Factory Production Control certification to BS EN 1090-1 UKCA and/or CE Marking compliant, where relevant: Steel Construction Sustainability Charter Steel 1 Execution class 1 2 Execution class 2 M manufacturer (products UKCA and/or CE Marked) l = Gold, for Life 3 Execution class 3 4 Execution class 4 D/I distributor/importer (systems comply with the CPR) l = Silver, Sponsor NHSS National Highway Sector Scheme N/A CPR not applicable l = Member

Structural components Protective systems Company name Tel QM CA FPC NHSS SCM SfL Company name Tel QM CA FPC NHSS SCM SfL Albion Sections Ltd 0121 553 1877 ✓ M 4 Forward Protective Coatings Ltd 01623 748323 ✓ N/A BW Industries Ltd 01262 400088 ✓ M 3 Hempel UK Ltd 01633 874024 ✓ N/A Bronze Cellbeam Ltd 01937 840600 ✓ M 4 20 Highland Metals Ltd 01343 548855 ✓ N/A Composite Profiles UK Ltd 01202 659237 D/I International Paint Ltd 0191 469 6111 ✓ N/A Construction Metal Forming Ltd 01495 761080 ✓ M 3 Jack Tighe Ltd 01302 880360 ✓ N/A 19A Silver Daver Steels Ltd 0114 261 1999 ✓ M 3 Joseph Ash Galvanizing 01246 854650 ✓ N/A Fabsec Ltd 01937 840641 N/A PPG Architectural Coatings UK & Ireland 01924 354233 ✓ N/A Farrat Isolevel 0161 924 1600 ✓ N/A Sherwin-Williams Protective & 01204 521771 ✓ N/A l Bronze FLI Structures 01452 722200 ✓ M 4 20 l Marine Coatings Hadley Industries Plc 0121 555 1342 ✓ M 4 l Vale Protective Coatings Ltd 01949 869784 N/A ✓ Hi-Span Ltd 01953 603081 ✓ M 4 l Wedge Group Galvanizing Ltd 01909 486384 N/A Gold Jamestown Manufacturing Ltd 00 353 45 434288 ✓ M 4 20 Headline Safety systems Kingspan Structural Products 01944 712000 ✓ M 4 l Company name Tel QM CA FPC NHSS SCM SfL MSW UK Ltd 0115 946 2316 D/I easi-edge Ltd 01777 870901 ✓ N/A l Prodeck-Fixing Ltd 01278 780586 ✓ D/I Structural Metal Decks Ltd 01202 718898 ✓ M 2 Steel stockholders Stud-Deck Services Ltd 01335 390069 D/I Company name Tel QM CA FPC NHSS SCM SfL ✓ Tata Steel – ComFlor 01244 892199 M AJN Steelstock Ltd 01638 555500 M 4 Bronze ✓ voestalpine Metsec plc 0121 601 6000 ✓ M 4 l Gold Arcelor Mittal Distribution - Scunthorpe 01724 810810 D/I 4 3B Barrett Steel Services Limited 01274 682281 ✓ M 4 3B Headline British Steel Distribution 01642 405040 ✓ D/I 4 Computer software Cleveland Steel & Tubes Ltd 01845 577789 ✓ M 3 Gold Company name Tel QM CA FPC NHSS SCM SfL Dent Steel Services (Yorkshire) Ltd 01274 607070 ✓ M 4 3B Idea Statica UK Ltd 02035 799397 N/A Dillinger Hutte U.K. Limited 01724 231176 ✓ D/I 4 StruMIS Ltd 01332 545800 N/A Duggan Profiles & Steel Service Centre Ltd 00 353 567722485 ✓ M 4 Trimble Solutions (UK) Ltd 0113 887 9790 N/A Kloeckner Metals UK 0113 254 0711 ✓ D/I 4 3B l Murray Plate Group Ltd 0161 866 0266 ✓ D/I 4 3B Steel producers NationalTube Stockholders Ltd 01845 577440 ✓ D/I 4 3B Gold Company name Tel QM CA FPC NHSS SCM SfL Rainham Steel Co Ltd 01708 522311 ✓ D/I 4 3B British Steel Ltd 01724 404040 ✓ M Tata Steel – Tubes 01536 402121 ✓ M Structural fasteners Company name Tel QM CA FPC NHSS SCM SfL BAPP Group Ltd 01226 383824 ✓ M 3 Manufacturing equipment Cooper & Turner Ltd 0114 256 0057 ✓ M 3 Company name Tel QM CA FPC NHSS SCM SfL Henry Venables Products Ltd T/A Blind Bolt 01299 272955 M Behringer Ltd 01296 668259 N/A Lindapter International 01274 521444 ✓ M Cutmaster Machines (UK) Ltd 07799 740191 N/A Bronze Tension Control Bolts Ltd 01978 661122 ✓ M 3 Bronze Ficep (UK) Ltd 01924 223530 N/A Gold Kaltenbach Ltd 01234 213201 N/A Silver Welding equipment and consumables Lincoln Electric (UK) Ltd 0114 287 2401 ✓ N/A Company name Tel QM CA FPC NHSS SCM SfL Peddinghaus Corporation UK Ltd 01952 200377 N/A Silver Air Products PLC 01270 614167 N/A

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